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<head><meta charset="utf-8"><title>wfcheck issue #62212 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html">wfcheck issue #62212</a></h3>

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<a name="169239607"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169239607" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ariel Ben-Yehuda <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169239607">(Jun 28 2019 at 16:23)</a>:</h4>
<p>Hi @pnkfelix, I'm looking at <a href="https://github.com/rust-lang/rust/issues/62212" target="_blank" title="https://github.com/rust-lang/rust/issues/62212">#62212</a></p>



<a name="169239631"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169239631" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ariel Ben-Yehuda <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169239631">(Jun 28 2019 at 16:23)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span></p>



<a name="169239836"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169239836" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ariel Ben-Yehuda <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169239836">(Jun 28 2019 at 16:25)</a>:</h4>
<p>The presence of inference variables makes me suspicious that something bad is going there</p>



<a name="169239852"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169239852" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ariel Ben-Yehuda <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169239852">(Jun 28 2019 at 16:25)</a>:</h4>
<p>do you know why they appear?</p>



<a name="169249136"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169249136" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169249136">(Jun 28 2019 at 18:19)</a>:</h4>
<p>I assume it’s an artifact of projecting the associated item, but I don’t really know beyond that</p>



<a name="169260125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169260125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ariel Ben-Yehuda <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169260125">(Jun 28 2019 at 20:38)</a>:</h4>
<p>I'll like to look at it. Hope I'll have some time tomorrow.</p>



<a name="169308917"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169308917" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Ariel Ben-Yehuda <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169308917">(Jun 29 2019 at 19:17)</a>:</h4>
<p>see <a href="https://github.com/rust-lang/rust/pull/62240" target="_blank" title="https://github.com/rust-lang/rust/pull/62240">https://github.com/rust-lang/rust/pull/62240</a></p>



<a name="169379442"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169379442" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169379442">(Jul 01 2019 at 09:11)</a>:</h4>
<p>hmm, interesting: normalization itself does not attempt to resolve type variables?</p>



<a name="169379499"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/wfcheck%20issue%20%2362212/near/169379499" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/wfcheck.20issue.20.2362212.html#169379499">(Jul 01 2019 at 09:12)</a>:</h4>
<p>are they considered orthogonal concerns? Do we at least ensure that type vars never map to an unnormalized type form?</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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